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Finding the Fourth Proportional to 719,076.70, 992,296.82 and 396,782.60

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Solution

The fourth proportional to 719,076.70, 992,296.82 and 396,782.60 is: 547,543.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,076.70 : 992,296.82 = 396,782.60 : x
  2. Step 2: Convert to fraction form
    719,076.70/992,296.82 = 396,782.60/x
  3. Step 3: Cross multiply
    719,076.70x = 992,296.82 × 396,782.60
  4. Step 4: Simplify right side
    719,076.70x = 393,726,112,211.33
  5. Step 5: Solve for x
    x = 393,726,112,211.33/719,076.70
  6. Step 6: Final answer
    x = 547,543.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.